Slice each potato in half, lengthwise and use a spoon to scoop out the flesh, leaving about 1/4" of the flesh intact. Reserve the potato flesh for another use, like my
tarragon mashed potato soup! Using a pastry brush, brush the insides of the potatoes with the melted butter and season well with salt and pepper. Turn the potatoes over and brush the skin sides with butter, and again season well with salt and pepper. Place potato halves skin-side up on a baking sheet and broil 'til the skin begin to brown and crisp, about 2 - 3 minutes (watch carefully so they don't burn!). Flip skins over and broil another 2 - 3 minutes, or until beginning to brown and crisp.